Metal Roof Skylight Detail

Velux skylight flashing kits are designed to shed water without relying on sealants that can break down over time.

Metal roof skylight detail.

Flashing a skylight may involve sealant as one line of defense against water infiltration but above all there must be good flashing. Most major skylight manufacturers provide flashing kits for asphalt shingles as well as specialty flashings for tile and metal roofing typically with a wraparound head flashing and moldable apron flashing that conforms to the roofing profile. Likewise the noise produced by rain hitting a skylight can be deafening. It cannot be flush mounted.

As a roof skylight in a metal building ages the uv rays of the sun dries up the oil in the skylight panels. Refer to the details. Metal roofing edm flashing pieces interlock with roofing material for a fast weather tight installation. Instructional video on how to properly install and trim out a square penetration on a standing seam metal roof.

Roof pitch the metal roofing panels shown in this manual require a min imum slope of 2 ʺ per foot to ensure proper drainage. One common concern with a metal roof is the amount of noise that things like rain and hail will cause inside. This causes the skylight to crack and exposes the fiberglass threads. Every velux skylight and roof window features a data plate mounted on the frame that will help you in the event that you need to access specialized information.

The exposed fiberglass threads allows airborne dirt to collect which restricts the light. For longer slopes and lower roof pitches contact fabral for other suitable profiles. Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage. Include roof pitch roof geometry slope length and climatic factors such as heavy snowfall or rainfall.

Whenever possible begin trim installation at the downwind end of the roof farthest away from the source of prevailing winds to al low flashing laps to face away from wind driven rain. While insulating a metal roof can help lessen the noise interference from weather there is no real insulation solution for a skylight. Metal roof skylight don t have to leak.